Window ventilator



June 11, 1935. R. e. L'lPTROTT WINDOW VENTILATOR Filed Oct. 5, 1950 INVENTOR. 'fimnnnn BLIPT'EUTT- b ATTORNEY.

order to leave room to grip the handle. throws the upper part of member ID outward so bent over after passing through suitably positioned holes in plate 2| to hold same in position.

Member H has a slot 23 positioned somewhat as shown and in which pin moves.

A pair of levers 24-25 are pivoted together at 26, the upper end of lever 24 being attached to and moving with pin IS in slot 23, and when so moved causing lever 25 to pivot around a pivoting pin 2'! in member H to raise and lower the opposite end 25A of lever 25. This outer or operating end of lever 25 terminates in a flanged slanted portion 25A adapted tobe engaged by the lower surface of the sliding window sash 28 when same is lowered to closed position, against the window sill 29. I

The pivoting pins used to hold the several parts in movable engagement with each other, as explained above, are preferably as shown in detail in Fig. 5, and each consists essentially of a headed rivet-like member 33 having a groove around its periphery near the end opposite its head. There may be a split circular wire 3| of springy material adapted to be sprung into said groove in such manner that (since its outer diameter whehin position is greater than that of the hole in which the pin fits) it will prevent the pin from coming out, while yet permitting its ready removal by merely first springing out the wire from the'pin. It will be noted that if the groove is slightly deeper than half the diameter of the wire, the edge of the member or plate which is being held adjacent the wire will bear on a slanted or beveled surface of the circular Wire and so cam the wire into its groove when pressure is applied to separate the plate. Thus this construction is essentially self-locking.

The operation of the device is as follows:

When the window is in closed position, and the ventilator units have been previously attached to the sides of the window frame with the glass inserted in position, the ventilator has been swung into the room out of the way of the window, as in Fig. 2. When the window is raised, however, to the position shown in Fig. l, the weight of the complete ventilator causes it to drop downwardly and outwardly along the slots 23 of members of the ventilator when it will take up the position shown in Fig. 1. This movement, at the same time, simultaneously and automatically lowers lever 24 which pivots 25 to raise the operating surface 25A thereof, to the substantially horizontal position shown. The stop member l8-in stationary member H limits outward movement of movable members In through engagement with its forward edge. It is of course understood that the levers 24 and 25 are dimensioned to move freely between members II and their plates 2|. When the angle of the flanges A or lllB is steep, the lower part of the member I0 is not forced inward from the base of the closed window Very far. Insome cases, however, e. g., when there is a handle on the baseof the lower window sash it may be necessary to force the lower part of member I0 farther inward with less steep flanges in This that the notch l6 fitsagainst pin I! with the result that when the sash is raised suddenly, the

member I!) does not fall against the window ledge, but rides around the pin l1 and the lowerpart is directed outwardly as it falls downward and takes the position shown in Fig. 1.

It will thus be seen that the mere raising of the window permits the ventilator to assume a position-beneaththe sash and over the top of the sill, such that a maximum of ventilating effect with a minimum of weather exposure is obtained. And a mere lowering of the window automatically moves the ventilator inwardly out of the way of the window and in such manner that it surely and positively clears the window sill in its movement.

Also the fastening shown in Fig. 5, not only permits ready assemblage of the parts of this invention but has a wide application in other fields, wherever a rivet or pivoting pin is desired.

It is to be understood that thepresent disclosure is for the purpose of illustration only, and that the invention is not limited thereto. To those skilled in the art, many modifications of the invention will be readily apparent, and it will also be obvious to such skilled persons that part of the method and means may be used without other parts thereof, many such combinations of the parts readily suggesting themselves. Therefore, it should be, and is to be distinctly understood that. for a definition of the limitations of the invention, reference must be had to the appended claims.

Having now described the invention what is claimed as. new and for which Letters Patent;

a. wind deflecting member, a pair of side .mem-

bers adapted to support said member, each of said side members including a stationary plate and a movable plate, said stationary plate being provided with a slot the movable plate havingia supporting pin adapted to slide and pivot in said slot, and also lever means attached to said stationary plate and adapted to be operated by the closing of the window to move said pin, thereby lifting and moving inwardly the movable plates with their wind-deflecting memberas the window is lowered. g 2. The combination in a window ventilator of a wind-deflecting membena pair. of sidemembers adapted to support said member, each of said side .members including a stationaryplate and a movable plate, each of said stationary plates being provided with a slot, the movable plate having a supporting pin adapted to slide and pivot in said slot, and also lever means attached to said stationary plate and adapted'to be operated by the closing of a window, tomove said pin, said slots being positionedto guide the wind-deflecting member with its end-holding members from a position beneath the window upwardly and inwardly to aposition to'one side ofthe window and clearing by a substantial margin the window $111.,

3. The combination in an automatic window ventilator of means for moving the ventilato r from a position beneath the window to a'position to one side thereof when the window is lowered, including side brackets, elements provided with slots slanting downwardly and outwardly. a member moved by. the bottom of the window; asecond member moved by the first member, said second member being attached to the opposite end of the first member and there being a pivotv in said first member between' its ends, and an operating pin positioned at the upper end of the secondmember and adapted .to move in one of said slots slanteddownwardly and outwardly to lift said brackets upward and inward; 1 I

4. The combination in a window ventilator of a pair of movable plates,-a wind-deflecting plate positioned therebetween, and apair of statiom aryplates, one for each movable plate and comprising movable levers, a flange around each stationary plate enclosing said levers, and a cover plate within the flange and permitting movement of the levers thereunder.

5.The combination in an automatic window ventilator of means for moving the ventilator her, an operating pin positioned atthe upper end of the second member and adapted to move in one of said slots to lift said brackets upwardly and inwardly, and other means, comprising a member adapted to earn against the bottom of the window for moving the ventilator inwardly.

6. The combination in a window ventilator of a wind-deflecting member, a pair of side members adapted to support said member, each of said side members incluing a stationary plate and a movable plate, each of said stationary plates being provided with a, slot the movable plate having a supporting pin adapted toslide and pivot in said slotyand also levermeans attached to said stationary plate and adapted to be operated by the closing of the window to move said pin, thereby lifting and moving inwardly the movable plates withtheir wind-deflecting member as the window is lowered, said stationary plate being provided with a pin and said movable plate provided with an arcuate cam surface adapted to bear against said pin for causing an outward movement simultaneously with a downward move-1 merit of said deflecting member when said means are released, a 7;In a device of the character described, the

combination comprising a deflecting member 4 adapted to be swungoutwardly from the bottom, said bottompreceding in said swinging motion, a pair of side members adapted for supporting said deflecting member, each of said side members including a stationaryplate and a movable plate, said stationary plate being provided with a slot, a. supporting pin associated with each of saidmovable plates and adapted for sliding and pivoting inrsaid slot, and lever means attached to said stationary plate and adapted forbeing operated by the lowering of the window to move said pin, thereby lifting said movable plates to a position where they may pivot on said pins as trunnions and swing inwardly over the window sill, said stationary;

RICHARD LIPTRO'I'IV, 

